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Tip of the Day
Language: .NET
Expertise: Beginner
Jun 30, 2009

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Building the Right Environment to Support AI, Machine Learning and Deep Learning


Convert Hashtable Keys or Values into an ArrayList

The simple way to convert Hashtable keys or values into an ArrayList is to use a constructor that takes a list of values. The Hashtable.Keys and Hashtable.Values properties both return a System.Collections.ICollection—and one ArrayList constructor accepts a System.Collections.ICollection. Here's the code to make the conversion in C#:

// Convert Hashtable keys into an arraylist
ArrayList list1 = new ArrayList(hashTable.Keys);


// Convert Hashtable values into an arraylist
ArrayList list2 = new ArrayList(hashTable.Values);
Deepak Choudhari
 
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